Filling-supplying mechanism for looms.



No. 635,759. Patented Oct. 3!,1899.

A. D. EMERY.

FILLING SUPPLYING MECHANISM FOR LOOMS'.

(Application filed on. 14, 1898.)

(No Model.)

6 Sheets-Sheet m: Nonms PETERS co.. wg'naumq" WASHINGTON, n. c.

Patented Oct. 31, I899.

A. D. EMERY. FILLING SUPPLYING MECHANISM FOR LOOMS.

Zia/611701". a @527 6 Sheets-Sheet 2,

(Application filed Oct. 14, 1898.)

(No Model.)

THE "cams PETERS ca. Pumoumo" WASHINGTON, n. c.

N0. 635,759. Patented Oct. 3!, I899. A. D. EMERY.

FILLING SUPPLYING MECHANISM FOR LOOMS.

(Application filed Oct. 14, 1898) (No Model.) 6 SheetsSheet 3,

A. D. EMERY.

FILLING SUPPLYI NG MECHANISM FOR LUOMS.

4 (No Model.)

(Application filed Oct. 14, 1898.)

m: nom'us Perms ca. PHOTO-LYING" w sumzmm, 0.0.

Patented Oct. 3|,1899.

S-Sheets Sheet 4,

No. 635,759. Patented Oct. 3|, I899.

-A. D. EMERY.

FILLING SUPPLYING MECHANISM FOR LOOM'S.

(Application filed Oct. 14, 1898.)

6 Sheets-Shut 5,

(No Model.)

No. 635,759. P'a'tented out; 31, I899.

A. n.- EMERY.

FILLING SUPPLYING MECHANISM FOR Looms (Applicatioxi filed Oct 14, 1 898.) (N0 M B 6 Sheets--Sheet 6;

'ABRAM D. EMERY, OF TAUNTON, MASSACHUSETTS.

FILLING-=SUPPLYING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 635,759, dated October 31, 1899.

Application filed October 14,1898. Serial No. 693,485; (No model.)

To aZZ whom it may concern:

Be it known that I, ABRAM D. EMERY, of Taunton, Massachusetts, have invented certain Improvements in Automatic Filling-Supplying Mechanisms for Looms, of which the following is a specification.

This invention relates to the class of automatic filling-supplying mechanism for looms in which the occurrence of a fault in the operation of the weavinginstrumentalities, such as the failure of the weft by breaking or exhaustion, stops the weaving instrumentalities and trips into action correcting'and restarting mechanism adapted to operate only when the weaving instrumentalities are at rest and which operates first to correct the fault and afterward to resume its normal position and restart the weaving instrumentalities into operation. Jorrecting and restarting mechan ism of this general character, shown and described in my pending application, Serial No. 687,557, upon a failure of the weft operates to eject the shuttle from the lay, to introduce into the lay another shuttle containing a full supply of weft, and to then resume its normal position and restart the weaving instrumentalities into operation. In the present case my correcting and restarting mechanism, automatically tripped into action by a failure of the weft, which stops the weaving instrumentalities, is combined with bobbinsupplying devices substantiallysuch as shown and described in Letters Patent of the United States No. 454,810, in which the bobbin, spindle, or other device carrying the filling is without stopping the loom automatically inserted into' a shuttle in the shuttle-box, the shuttle being self-threading and being so constructed that the defective bobbin is ejected from it by the incoming full bobbin. The obvious advantages of the present invention arise from the facts that the two mechanisms to wit, the weaving mechanism and the bobbin-supplying mechanismare not operated at the same time, but each mechanism is automatically tripped into action concurrently with the stopping of the other. It hence follows that the weaving mechanism may be run at any practical high rate of speed, because while it is running the bobbin-supplying mechanism is at rest, and, on the other hand, the bobbin-supplying mechanism may be run at any such slow rate of speed as may be necessary to insure its certainty of operation, because while the change of bobbins is being made the weaving mechanism is at rest.

The invention is herein illustrated in connection with an upright loom equipped with a weft stop-motion and a peculiarly effective self-tightening brake similar to those shown and described in my pending application, Serial No. 687,557.

The drawings are as follows, to wit: Figure 1 is a top View of the loom, partly in section. Fig. 2 is a transverse vertical section of the loom, taken through the plane indicated by the dotted line 00 00 on Fig. 1. Figs. 3 and 4 are detail drawings of the brake mechanism, Fig. 3 showing the brake-strap released from the brake-wheel, and Fig. 4 showing the brake-strap engaging the brakewheel. Fig. 5 is a rear View of a portion of the loom, affording a view in elevation of the bobbin-supplying devices. Fig. 6 is an elevation, partly in section, showing a portion of the end of the loom and the mechanism for operatingthe bobbin-supplyingdevices. Fig. 7 is an elevation, partly in section, showing details of the safety-stop for preventing the operation of the-bobbin-supplying mechanism in case the lay has not come to rest in the proper position. Fig. 8 is a transverse section taken through the vertical plane indicated bythe dotted line y g on Fig. 5, showing details of therestarting devices. Fig. 9 is a perspective view of the devices for controlling the supplemental driving-belt which operates the bobbin-supplying mechanism.

The successful accomplishment of the results sought for in the'present invention requires the presence in the loom of a stopping mechanism susceptible of being tripped into action by the breaking or running out of the weft-thread and adapted to invariably bring the operative parts of the loom to rest with the shuttle and lay in prescribed positions. For effecting these results there may be employed a weft stop-motion and brake mechanism resembling those shownand described in Letters Patent of the United States No. 605,601, dated June 14, 1898.

As will be seen, the drawings show portions l of an upright loom-frame composed in part of the standards A A and the horizontal memis pivoted to the handlever D bers B B B B The main driving-shaft O is provided with the driving-pulley O and the loose pulley C to the hub of which is secured the supplemental pulley C The position of the main driving-belt is governed by the belt-shifter D, carried at the rear end of the horizontal slide-barD, which at its front end The lever D has attached to it the free end of a contracting spiral spring D the opposite end of which is secured to the loom-frame.

When the loom is running normally, the main driving-belt, as shown in Fig. 1, is retained in engagement with the driving-pulley G by means of the main trip-lever E, pivoted at the rear end to the frame of the loom and having near its forward end a shoulder E, which engages the shoulder D on the slidebar D.

Then the hand-lever D is swung outward into the position in which it is represented in Fig. 2, the finger F, projecting laterally from its hub, engages and lift-s the radius-arm F, which is loosely hung on the main drivingshaft 0, and which is constantly subjected to the downward pull of the contracting spiral spring F having its upper extremity connected with the free end of the radius-arm F and its opposite extremity secured to the pin F affixed to the frame of the loom. The radius-arm F has affixed to it the end F of the brake-strap F which surrounds the greater part of the brake-wheel F, and has its opposite end F connected to the adjustable clamp F attached to the frame of the loom. A screw-bolt F is inserted through a vertical aperture in the arm F connected with a stationary part of the loom. A jam-nut F serves to hold the screw-bolt F in position.

Vhen the radius-arm F is oscillated to release the brake,the portion of the brake-strap adjacent to its free end-that is, the end attached to the arm Fafter moving clear from the brake-wheel encounters the stop presented for it by the lower end of the screw-bolt F from which it results that the brake-strap, which is a flexible metallic band, is made to spring into a position in which it is approxi mately concentric with and is wholly cleared from the periphery of the brake-wheel.

The relative positions of the members of the brake mechanism when the loom is in normal operation are indicated in Fig. 3, and their relative positions when operating to stop the lever are shown in Fig. at.

The stopping of the loom involves the lifting, either manually or otherwise, of the forward end of the main trip'lever E. This disengages the shoulder E from theshoulder D, and thus releases the belt-shifter slide-bar D The brake-strap is thereby tightened around the brake-wheel in part by the contractile force of the spring F and in part by the frictional influence upon the brake-strap of the periphery of the brake-wheel, which rotates, as indicated by the curved arrow on Fig. 4c, in such direction as to make that frictional influence tend to pull the brake-strap away from its fixed end F and thus cause it to tighten itself upon the brake-wheel. The effectiveness of the brakestrap thus organized is such that by varying the position of the adjustable clamp F the operative stress of the spring F can be so regulated with relation to the speed at which the loom is running as to always of feet the stopping of the loom at the expiration of a predetermined period after the beltshifter and brake-strap have been released by the tripping of the main trip-lever E, and the loom can thus always be brought to rest with its parts in a prescribed position. The tripping of the main trip-lever E is automatically eifected by the operation of the hereindescribed weft stop-motion whenever a weftt-hread breaks or runs out.

The weft stop-motion embraces the weftfork G, pivoted to the front end of the lever G, which is affixed to the rockshaft G having its bearings in brackets attached to the loom -frame. An adjustable screw-bolt G, extending upward from the girder B, acts as a stop to limit the range of downward swing of the lever G. The link G connected at its upper end to the lever G, is provided near its lower end with the longitudinal slot G for admitting a pin G affixed to and projecting laterally from the trip-lever E.

\Vhen the lay ascends, the weft-thread, if present, is carried into collision with the lower end of the weft-fork G, and thereby tilts the weft'fork out of the position in which it is represented in Fig. 2, thus clearing the backwardly-turned finger G of the shank of the weft-fork from the path of motion of the free end of the constantly-vibrating lifting-arm H, which is secured to one end of a rock-shaft.

H, mounted in a bracket projecting laterally from the loom-frame. The opposite end of said rock-shaft has secured to it a shorter arm 1-1 which is pivotall y connected with the upper end of the link 11, the lower end of which is engaged by the crank-pin H, projecting from the head 11", affixed to the end of the shaft 11, upon which the main cams of I the loom are mounted. The vibrations of the liftin g-arin H are so timed that the latter part of the upward excursion of its free end is coincident with the heat which ensues immediately after the shuttle b has been boxed in the shuttle-box I, adjacent to the fork G. If the weft-thread has ru u out orhas been broken, the weft'fork under the influence of gravity retains the position in which it is represented in Fig. 2, so that its backwardly-turned linger G will be caught by the free end of the lifting-arm l'I. Thus during the concluding part of the upward movement of the free end of the arm H the fork G will be carried upward, thereby, so vibrating the lever G as to effect the disengagement of the trip-lever E from the shoulder D on the slide-bar D. The beltshifter and brake being thus released to the influence of their respective springs will bring the operative parts of' the loom to rest by the time the lay J has reached its lower position. During this time the shuttle will be thrown from the box 1 into the box at the opposite end of the lay, which is its appropriate position for presentation to the action of the bobbin-supplying mechanism. After the fork has been carried upwardly sufficiently to trip and release the slide-bar D the continued upward movement of the free end of the lifting-arm H will cause the upper end G of the shank of the fork to be carried into collision with the cam-shaped edge of a plate G affixed to the frame of the loom, which will effect the disengagement of the finger G from the free end of the lifting-arm H just before the complete stoppage of the loom. Consequently the rock-shaft G is released to the influence of a coil-spring G tending to restore the parts connected with the said rockshaft to their normal position for the automatic restarting of the loom by the restarting mechanism.

The devices thus far described are those shown in my pending application, Serial No. 687,557, in which they are represented as combined with shuttle-changing mechanism. In the present invention they are combined with bobbin-supplying mechanism, which for the purposes of the present case may include certain features of the bobbin-supplying mechanism shown in Letters Patent of the United States No. 462,919 to wit, a magazine or hopper or, adapted to contain a plurality of bobbins a, with the free ends of the several threads secured to a pin a and a self-threading shuttle Z) so constructed that the act of inserting a bobbin into it will efieet the ejection of the bobbin previously contained in it. The hopper a is carried upon the extremity of the upper arm of the bell-crank lever c, the latter being pivotally mounted by means of the pin upon the inner vertical member a of a supplemental frame secured to the main frame of the loom, as shown in Fig. 6. The outer vertical member 0 of the supplemental frame is united to the inner member 0 by the horizontal rods 0 and 0 The lower arm 0 of the bell-crank lever o carries at its extremity a roller 0 for bearing upon the r0- tating cam 0 which is adapted to rock the hopper between the two positions, one represented by solid lines and the other by dotted lines in Fig. 6.

The transfer of the lowermost bobbin from the hopper a into the shuttle b is effected by the downward vibration of the pusher c, which is pivoted upon the upper arm of the bell-crank lever c and normally held against the stop 0 by means of a spring o acting upon the shank 0 of the pusher, as shown in solid lines in Fig. 6. During the concluding portion of the downward movement of the hopper the shank e is carried into collision with the stop-pin e affixed to an arm projecting from the supplemental frame. By such collision the pusher is rocked upon its axis and pushes the bobbin from the magazine into the shuttle b, (represented in dotted lines in Fig. 6,) the bobbin previously contained in the shuttle being thereby ejected through the openings in the bottom of the shuttle and in the bottom of the shuttle-box.

When the weft stop-motion is acting to trip the main-belt shifter and brake, motion is transmitted from the radius-arm d, affixed to the rock-shaft G through the link d to the rock-lever e, which is loosely mounted on a supplemental cam-shaft f and provided with a laterally-extending pin e to engage a shoulder 6 of a gravity-pawl e and raise the latter clear of the shoulder e formed on the slidebar 6 The slide-bar e is mounted in a bracket 6", affixed to the loom-frame, and is provided with a belt-shifter e to govern the position of a supplemental driving-belt 6 which operates the bobbin-supplying mech anism. A contracting spiral spring 6 has one end secured to the bracket 6 and its opposite end to the slide-bar 6 When the pawl e is raised, the spring 6 pulls the slide-bar 6 into position to set the bobbin-supplying mechanism into operation. A radius-arm e swayed by the restarting mechanism during the final portion of the operation of the bobbin-supplying mechanism, as hereinafter described, catches a pin a, projecting from the slide-bar e ,and thereby moves the slide-bar 6 back into position to be reengaged by the pawl e The slide-bar e has adjustably affixed to its rear end a curved strip of resilient material 6 carrying at its free end a suitable brake-block e for preventing the motion of the bobbinsupplying mechanism after the supplemental driving-belt has been shifted. A worm-wheel f, affixed to the cam-shaftf, is engaged by a Worm f secured to the supplemental driving-shaft f mounted in a tubular bracket f affixed to the loom-frame. Upon the supplemental driving-shaftf is a fixed pulleyf and alongside of it a loose pulley f, the latter being loosely mounted upon the turned-down portionf of the tubular bracketf The supplemental driving-belt e normally engages the fixed pulley f and extends to and around the pulley'C secured to or formed integrally with the main loose pulley 0 from which motion is derived to operate the bobbin-supplying mechanism and automatically restart the loom whenever the main belt is shifted to the main loose pulley by the operation of the weft stopmotion.

During the normal operation of the loom, while the supplemental cam-shaftfis being prevented from rotation by the engagement of the pawl c with the shoulder (2 the supplemental driving-belt is held on the loose pulley f The supplemental cam-shaftfmakes one complete revolution, during which the cam 0 mounted upon it, effects the discharge of the bobbin from the shuttle and from the box in which the shuttle containing it has come to rest and the introduction into the shuttle of another bobbin in its place. During a prescribed part of the concluding portion of the rotation of the supplemental camshaftf the restarter g, whichis a radius-arm affixed to the said shaft f, by engaging the radius-arm g, affixed to the horizontal rockshaft imparts a rocking motion to the said rock-shaft and corresponding swaying motions to the radius-arms e g ,.and g, which are also aiiixed to the rock-shaft The function performed by the radius-arm e when thus swayed is the moving back of the slidebar a as hereinbefore mentioned. The radius-arm g is provided with a slot 9 which when the radius-arm g is thus swayed by its engagement with a pin g, affixed to and projecting from the main-belt shifter D, pushes the slide-bar D forward, and by thus shifting the main belt and loosening the brakestrap from the brake-wheel restarts the operative parts of the loom. The radius-arm g when thus swayed serves as a dog, which by engaging a shoulder g on the counterbalance 7 positively prevents the rotation of the bobbin-supplying mechanism during the normal operation of the weaving instrumentalities. Such rotation will ordinarily be prevented by the brake 6 but the radius-arm g may, if desired, be employed for abundant caution. The parts are so timed that the shoulder E of the trip-lever E drops behind the shoulder D on the slide-bar D and the pawl e drops behind the shoulder e on the slide-bar a just before the restarter g clears the radius-arm g, thereby keeping the operating parts of the loom in action until the main belt-shifter and brake are again tripped. In the meantime the brake-block 6 having been carried by the slide-bar a into contact with the face of the fixed pulley f arrests the rotation of the cam-shaft f, which remains stationary until again set in motion in consequence of the absence of a weft-thread, as described. essential that the restart-er 9 shall continue its swaying movement to some extent after having effected the restarting of the loom in order that the radius-arm g may be free to be swayed into the position in which it is indicated in dotted lines in Fig. 8. The supplemental driving-belt 6 will have been shifted by this time onto the loose pulley f but the 112's inert ice of the moving parts suffices to furnish the small amount of force needed to prolong the rotation of the shaft f until the free end of the restarter g has been carried around beyond the path of motion of the free end of the radius-arm 9', so that the radiusarm g will not encounter the restarter when again swayed by the rook-shaft g the next time the bobbin supplying mechanism is started into operation.

Care has thus been taken to describe certu re by a jam-nut It is tain features of the loom which do not of themselves constitute part of the present invention, because the bobbin-supplying operation is performed while the operative parts of the loom are at rest in prescribed positions, and it hence follows that the instrumentalities for stopping the operative parts of the loom must, so far as possible, operate to bring about such stoppage with the lay down and with the shuttle in the box at the end of the lay in front of the bobbin-magazine. If, however, from any cause the lay should not come to rest in the proper position, there is provided a safety device for preventing the bobbinsupplying mechanism from acting. For this purpose there is pivoted to a bracket Z, secured to the loom-frame, a lever Z, whose lower end is engaged and rocked bya wipercam Z projecting from the face of a collar Z affixed to the supplemental cam-shaft f. A contracting spiral spring Z having one end secured to the extension Z of the lever Z and its other end secured to the extremity of the shank Z of the inverted-T lever Z tends to rock the lower end of the lever Z against the supplemental cam-shaft f. An arm Z projectinglaterally from the lever Z, is pivotally connected to a lever Z", whose lower end is provided with an adjustable stop, comprising a screw-bolt Z secured in a threaded aper- Z. This stop engages an arm Z extending from the slide-bar c and is held normally in contact therewith by means of a contracting spiral spring Z one end of which is secured to an arm Z of the lever Z and its opposite end to a finger projecting upward from the arm Z The lower end of the lever Z will therefore partake of the to-andfro motions of the slide-bar c and its upper end will be rocked between two positions, one of which is shown by full lines and the other by dotted lines in Fig. 7. The inverted- T lever Z is pivoted between its ends to the bracket Z, and one of its arms Z under the influence of the spring Z may rest upon a stop Z in which case the extremity of the arm Z intersects the path of motion of the upper end of the lever Z as shown by the dotted lines in Fig. 7. The end of the opposi-te arm Z of the lever Z is adapted to be engaged by a toe Z secured to the lay, so that when the lay is within about three-sixteenths of an inch of its lowermost position the end of the arm Z will have been rocked upward out of the way of the lever Z Should the lay not be in its proper position when the loom stops and the slide-bar e is tripped, the relative positions of the adjacent ends of the arm Z and the lever Z will be as indicated by the dotted lines in Fig. 7. Under these circumstances as soon as the bobbin-supplyin g mechanism begins to move the Wiper-cam Z will rock the lever Z, by the pull of which the upper end of the lever Z will be carried against the end of the arm Z which then becomes the fulcrum of the lever Z, so that by the continued pull of the lever Z the lower end of the Ioc lever Z is made to move the slide-bar 6 back, and thereby shift the supplemental drivingbelt 6 and prevent further movement of the bobbin-supplying mechanism. If the lay be in proper position, the arm Z will be swung out of the way, so that the upper end of the lever Z will be left free to swing instead of the lower end, with the result that the bobbin-supplying mechanism Will not be interfered With.

What is claimed as the invention is- 1. In a loom, instrumentalities for temporarily bringing the operative parts of the loom to rest with the lay and shuttle in prescribed positions; instrumentalities adapted to act while the operative parts of the loom are thus at rest, for automatically introducing a bobbin into the shuttle and displacing therefrom the bobbin previously contained therein, and then restarting the operative parts of the loom, and means operative upon a failure of the weft to trip said instrumentalities into action.

2. In a loom, driving mechanism for driving the operative parts of the loom; means operative upon a failure of the Weft for temporarily bringing the operative parts of the loom to rest with the lay and shuttle in prescribed positions; instrumentalities adapted to act while the operative parts of the loom are thus at rest, for introducing a bobbin into the shuttle and displacing therefrom the bobbin previously contained therein, and then restarting the operative parts of the loomg supplemental driving mechanism for driving said instrumentalities, and a dog normally holding said supplemental driving mechanism at rest, but operative upon a failure of the weft to temporarily release said supplemental driving mechanism into action.

3. In a loom, a bobbin-magazine; a lay; means-acting upon a failure of the Weft to bring the operative parts of the loom to rest with the lay down and theshuttle in the box at the end of the lay nearer said magazine;

ating said bobbin-supplying mechanism and then restarting the said main driving mechanism; a tripper for tripping said supplemental driving mechanism into action, and a Weft stop-motion for stopping said main driving mechanism and actuating said tripper whenever a Weft-thread breaks or runs out.

ABRAM D. EMERYi \Vitnesses:

CHARLES G. WAsHBURN, W. T. EMERY. 

